Trace number 1522275

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
iPAWS 2009-03-22SAT 0.05799 0.0588229

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/420/
unif-k3-r4.25-v420-c1785-S1624574519-076.cnf
MD5SUMf91fb9cf218ac3f77f20099d617a2bf9
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.009998
Satisfiable
(Un)Satisfiability was proved
Number of variables420
Number of clauses1785
Sum of the clauses size5355
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 31785
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.04/0.05	s SATISFIABLE
0.04/0.05	v -1 2 -3 4 5 -6 7 8 -9 -10 11 12 13 14 -15 16 -17 18 19 -20 21 22 23 24 25 -26 27 -28 29 -30 31 32 -33 -34 35 -36 37 38 -39 40 -41 -42 -43 44 45 46 -47 48 49 -50 51 -52 -53 -54 55 -56 57 -58 -59 -60 61 62 63 -64 65 66 -67 -68 -69 70 71 72 73 -74 75 76 77 -78 79 -80 81 -82 83 -84 85 -86 87 88 -89 90 -91 92 93 94 -95 -96 -97 -98 99 100 101 102 -103 104 105 106 -107 108 -109 -110 111 112 113 114 115 -116 117 118 119 -120 121 122 -123 -124 125 -126 -127 -128 129 -130 -131 -132 133 -134 -135 -136 -137 138 139 -140 -141 142 143 144 -145 146 147 148 149 150 -151 -152 153 154 155 156 157 158 159 -160 -161 -162 163 164 165 -166 -167 -168 -169 -170 -171 -172 173 -174 -175 176 177 -178 179 180 -181 -182 183 184 185 -186 187 -188 -189 -190 -191 -192 193 -194 -195 -196 -197 198 -199 200 201 202 203 -204 205 206 207 -208 209 -210 -211 -212 -213 214 -215 -216 -217 -218 -219 -220 221 222 223 224 225 -226 -227 -228 -229 -230 231 232 -233 234 235 -236 237 -238 -239 240 -241 -242 243 -244 -245 246 247 248 -249 250 251 252 253 254 -255 256 257 258 -259 -260 -261 -262 -263 -264 265 266 -267 -268 269 -270 271 -272 273 274 -275 -276 277 278 279 280 281 -282 -283 284 -285 -286 287 288 289 -290 -291 -292 -293 294 -295 296 297 -298 299 300 301 -302 303 -304 -305 -306 307 -308 309 310 -311 -312 -313 -314 -315 -316 317 -318 -319 320 -321 322 323 324 325 -326 -327 -328 -329 -330 331 -332 333 -334 -335 -336 337 338 -339 340 -341 342 343 344 -345 -346 -347 -348 -349 350 -351 352 -353 354 355 356 -357 358 359 360 361 362 363 364 365 366 -367 368 369 -370 371 372 -373 -374 375 376 377 378 379 380 381 382 -383 -384 385 386 -387 388 389 390 -391 392 393 -394 395 -396 -397 398 399 -400 -401 -402 -403 -404 405 406 -407 408 -409 -410 411 412 -413 -414 415 416 -417 418 419 420 0
0.04/0.05	c input file instance-1522275-1238575362.cnf, flips 39344

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:489) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1522275-1238575362/watcher-1522275-1238575362 -o /tmp/evaluation-result-1522275-1238575362/solver-1522275-1238575362 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522275-1238575362.cnf 3418835 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.00 1.00 1.09 3/64 3597
/proc/meminfo: memFree=1538928/2055920 swapFree=4174972/4192956
[pid=3597] ppid=3595 vsize=335916 CPUtime=0
/proc/3597/stat : 3597 (iPAWS) R 3595 3597 3287 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 1130203323 343977984 469 1992294400 134512640 135114423 4294956240 18446744073709551615 134615614 0 0 4096 0 0 0 0 17 1 0 0
/proc/3597/statm: 83979 469 54 146 0 83831 0

[startup+0.0468061 s]
/proc/loadavg: 1.00 1.00 1.09 3/64 3597
/proc/meminfo: memFree=1538928/2055920 swapFree=4174972/4192956
[pid=3597] ppid=3595 vsize=335916 CPUtime=0.04
/proc/3597/stat : 3597 (iPAWS) R 3595 3597 3287 0 -1 4194304 929 0 0 0 4 0 0 0 18 0 1 0 1130203323 343977984 913 1992294400 134512640 135114423 4294956240 18446744073709551615 134546242 0 0 4096 0 0 0 0 17 1 0 0
/proc/3597/statm: 83979 913 57 146 0 83831 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 335916

Solver just ended. Dumping a history of the last processes samples

[startup+0.0468061 s]
/proc/loadavg: 1.00 1.00 1.09 3/64 3597
/proc/meminfo: memFree=1538928/2055920 swapFree=4174972/4192956
[pid=3597] ppid=3595 vsize=335916 CPUtime=0.04
/proc/3597/stat : 3597 (iPAWS) R 3595 3597 3287 0 -1 4194304 929 0 0 0 4 0 0 0 18 0 1 0 1130203323 343977984 913 1992294400 134512640 135114423 4294956240 18446744073709551615 134546242 0 0 4096 0 0 0 0 17 1 0 0
/proc/3597/statm: 83979 913 57 146 0 83831 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 335916

Child status: 0
Real time (s): 0.0588229
CPU time (s): 0.05799
CPU user time (s): 0.054991
CPU system time (s): 0.002999
CPU usage (%): 98.5841
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.054991
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 937
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 2
involuntary context switches= 1

runsolver used 0.003999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node7 at 2009-04-01 10:42:42
IDJOB=1522275
IDBENCH=70670
IDSOLVER=516
FILE ID=node7/1522275-1238575362
PBS_JOBID= 9070530
Free space on /tmp= 65660 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/420/unif-k3-r4.25-v420-c1785-S1624574519-076.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522275-1238575362/watcher-1522275-1238575362 -o /tmp/evaluation-result-1522275-1238575362/solver-1522275-1238575362 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522275-1238575362.cnf 3418835

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= f91fb9cf218ac3f77f20099d617a2bf9
RANDOM SEED=3418835

node7.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.236
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.236
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1539344 kB
Buffers:         99836 kB
Cached:         317224 kB
SwapCached:      11884 kB
Active:         198660 kB
Inactive:       231780 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1539344 kB
SwapTotal:     4192956 kB
SwapFree:      4174972 kB
Dirty:             716 kB
Writeback:           0 kB
Mapped:          19068 kB
Slab:            72064 kB
Committed_AS:  3023920 kB
PageTables:       1456 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 65660 MiB
End job on node7 at 2009-04-01 10:42:43